Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754812AbYAPPqp (ORCPT ); Wed, 16 Jan 2008 10:46:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751222AbYAPPqh (ORCPT ); Wed, 16 Jan 2008 10:46:37 -0500 Received: from crystal.sipsolutions.net ([195.210.38.204]:50780 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750986AbYAPPqf (ORCPT ); Wed, 16 Jan 2008 10:46:35 -0500 Subject: Re: 2.6.24-rc7 lockdep warning when poweroff From: Johannes Berg To: Peter Zijlstra Cc: Dave Young , Linus Torvalds , Linux Kernel Mailing List , Ingo Molnar , Oleg Nesterov In-Reply-To: <1200399661.26045.13.camel@twins> References: <1200302644.7415.6.camel@twins> <1200306902.5887.39.camel@johannes.berg> <1200307288.7415.11.camel@twins> <1200307896.5887.42.camel@johannes.berg> <1200393685.5887.113.camel@johannes.berg> <1200399661.26045.13.camel@twins> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-g4KsQ4ktY+zrfYQioE7w" Date: Wed, 16 Jan 2008 00:54:53 +0100 Message-Id: <1200441293.5887.158.camel@johannes.berg> Mime-Version: 1.0 X-Mailer: Evolution 2.12.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1941 Lines: 49 --=-g4KsQ4ktY+zrfYQioE7w Content-Type: text/plain Content-Transfer-Encoding: quoted-printable > > Turns out that there are many users that give a dynamic string as the > > workqueue name (only the first three are relevant for the problem at > > hand because the others are single-threaded): >=20 > I'm not sure the single threadedness of a workqueue matters here. Oh I should have explained this, missed it earlier. No, the single-threadedness doesn't really matter for the problem, but the warning Dave got couldn't possibly have triggered for a single-threaded workqueue because it was from the CPU up/down code that spawns/stops the new workqueue thread on a new/dying CPU. johannes --=-g4KsQ4ktY+zrfYQioE7w Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIVAwUAR41HzKVg1VMiehFYAQK/fg/6AiPNOzPp5pyivaoQZIHByGNd1GxN3DzQ AsYVV4R7PqEqB55XtFQGbOjAxrmai7PJtpv8c8ZhpDm02TN5OJsoU2aBJD2tsOkR 1K2/30B6qjvqBXrXFe5aZ9JjAwNmCAPGJGIv+e32u8tk3kEKlKJoQZQQE0Vf/hR3 /YOBQctNJG6nFLB2NNi6p/jXCYYf4rzWPra5e2dhoOs/OrjJsCroO4M1TlBTI4YM kClZt8W1J7vVZ4rw4QQSrpCpwUtLoAVxwbSspQ1tNgsLWu09aFayadOPjyHPDUGz TsTiFhmREkYJYlwmdJ06SWVpKz8jMnPztWd9t5pTzAE7ACdmEnmucof96PNoO3ok CzamJX6VOfiSiEmcOoTmzG+unK7+qZdnUQhwGTQ6+guy1w7ONSLlBl4e4gOI4zRv rMcBwdcRDxn8fCihl/sK6H6VI2saGmXRa7swc71/kYQxaESlvujQLdHQLivwa6Ou bx+9ANCojSNSI/bC+Hf9Qtyy+7jXTsKSeIUyJ66EoBtmeS7lkKOXAt21WmOpAQWT /eoK+/OPcDKeBiO9C6cm3AIzAISlV0w6k9QxYpj1VI1zZX8sCIl/zHWy/jATscQQ fr2wnhl04GV+z3HiqcVLGWNRIL/nIcTtIuFK1urHiA8EBhfnRLo2lMx4VuS2MCy2 MBH65sf6Sak= =Uq5I -----END PGP SIGNATURE----- --=-g4KsQ4ktY+zrfYQioE7w-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/